What qualifies as bad intentions? Was not what he was doing the mark of a depraved mind? Could he be recognized as anything but someone with mental problems and as such, very unpredictable?

Maybe he preparing to rape her. She did good. People do not do such things in public, and a reasonable and prudent person would draw down on a perv such as this. He had focused his attention on her and spoke to her in a depraved and unpredictable state. Nuff said.